Grades are a hygiene check, not a security guarantee.

MCP, MCP server

Opencode Cli Mcp

Session context injection for opencode-cli-mcp (MCP server wrapping opencode serve)

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

PERMISSION_DELETE_FILES NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • PERMISSION_DELETE_FILES Low

    Contains a call that can delete files.

    api/routes/system.py, line 19 r = subprocess.run(

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    scripts/cua-smoke.py, line 351 resp = urllib.request.urlopen(f"{BACKEND_URL}{HEALTH_PATH}", timeout=5)

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    native/build.ps1, line 80 # Bundle .env.example (NOT .env - dev .env has personal API keys)

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    src/opencode_cli_mcp/client.py, line 30 password = os.environ.get("OPENCODE_SERVER_PASSWORD", "")

  • OBFUSCATION_FILE_OVER_READ_CAP Note

    A file was over the read cap and was not fully read.

    uv.lock, line 1 version = 1

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Concern

    can delete files.

    PERMISSION_DELETE_FILES

    api/routes/system.py, line 19

    r = subprocess.run(

    scripts/cua-smoke.py, line 304

    subprocess.run(["taskkill", "/F", "/IM", f"{name}.exe", "/T"], capture_output=True, timeout=10)

    scripts/cua-smoke.py, line 325

    r = subprocess.run([installer, "/S"], capture_output=True, timeout=120)

    Show more

    scripts/cua-smoke.py, line 347

    subprocess.Popen([exe], cwd=INSTALL_DIR, env=env)

    scripts/cua-smoke.py, line 797

    r = subprocess.run([uninstaller, "/S"], capture_output=True, timeout=60)

    scripts/cua-smoke.py, line 806

    subprocess.run(

    scripts/cua-webapp-test.py, line 111

    subprocess.run( # noqa: S603 - fixed literal command array, local test script

    scripts/cua-webapp-test.py, line 118

    os.remove(path)

    scripts/cua-webapp-test.py, line 139

    subprocess.Popen( # noqa: S603 - fixed literal command array, local test script

    src/opencode_cli_mcp/tools/mcpb_install.py, line 55

    shutil.rmtree(tmp, ignore_errors=True)

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    scripts/cua-smoke.py, line 351

    resp = urllib.request.urlopen(f"{BACKEND_URL}{HEALTH_PATH}", timeout=5)

    scripts/cua-smoke.py, line 422

    resp = urllib.request.urlopen(f"{BACKEND_URL}{FEATURE_PATH}", timeout=5)

    scripts/cua-smoke.py, line 436

    resp = urllib.request.urlopen(f"{BACKEND_URL}{DIAGNOSTICS_PATH}", timeout=5)

    Show more

    scripts/cua-smoke.py, line 702

    with urllib.request.urlopen(req, timeout=5) as resp:

    scripts/cua-smoke.py, line 737

    with urllib.request.urlopen(req, timeout=5) as resp:

    scripts/cua-webapp-test.py, line 184

    r = urllib.request.urlopen(url, timeout=3) # noqa: S310 - localhost health poll from config

    scripts/cua-webapp-test.py, line 204

    r = urllib.request.urlopen(url, timeout=3)

    scripts/cua-webapp-test.py, line 403

    r = urllib.request.urlopen(f"{BACKEND_URL}/api/v1/diagnostics", timeout=5) # noqa: S310 - localhost diagnostics check

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    native/build.ps1, line 80

    # Bundle .env.example (NOT .env - dev .env has personal API keys)

    native/build.ps1, line 81

    $envExample = "$Root\.env.example"

    src/opencode_cli_mcp/client.py, line 30

    password = os.environ.get("OPENCODE_SERVER_PASSWORD", "")

    Show more

    native/build.ps1, line 83

    Copy-Item $envExample "$ResourceDir\.env.example" -Force

    native/build.ps1, line 84

    Write-Host " Bundled .env.example OK" -ForegroundColor Green

    native/build.ps1, line 86

    Write-Host " WARNING: .env.example not found at repo root" -ForegroundColor DarkYellow

    native/src/backend.rs, line 141

    .env(ENV_PORT, BACKEND_PORT.to_string())

    native/src/backend.rs, line 142

    .env(ENV_HOST, "127.0.0.1")

    native/src/backend.rs, line 143

    .env(ENV_TAURI, "1")

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    uv.lock, line 1

    version = 1

  • Licence

    Pass

    A licence file is present (LICENSE).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 80fe427568b6. can delete files. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 80fe427568b674152976f3d624c66ba7a19b78ab

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen